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Marks USA • www.marksusa.com • 631-225-5400 • 800-526-0233 • Fax: 631-225-6136 • 

© 2008, Marks USA

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Figure 4

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DOOR PREPARATION:

1. Fold and apply 

template

to high edge of door at desired height from floor.

2. Mark hole centers on door and door edge.
3. Drill 3/8" 

thru-bolt

holes first, then drill 2-1/8" hole.

INSTALL STRIKE:

1. Align strike with latch.
2. Trace strike outline on door jamb.
3. Mortise jamb and install strike and dust box.

INSTALL LATCH:

1. Drill 1" diameter hole for latch. Mortise for latch front. Insert latch and fasten with

two screws.

NOTE:
It is important that both 1" and 2-1/8" holes be on the same horizontal center line.

HOLLOW METAL DOORS:

1. Must have horizontal and vertical lock and latch support provided by door

manufacturer

2. If 2-1/8" hole exists, use optional 

Marks J295 Installation Tool

to ensure

accurate drilling of 5/16" thru-bolt holes.

3. For best results, align the 

J295 Installation Tool

to door and clamp to door

before drilling.

365 Bayview Ave., Amityville, NY 11701

631-225-5400  •  1-800-526-0233  •  Fax 631-225-6136

www.marksusa.com

175 Biometric Installation Instructions

®

Door Preparation

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